Improvement in machines for cutting staves



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UNITED STATES PATENT OFFICE.

H. M. SHAW, OF FREMONT, OHIO 4 I IMPROVEMENT IN MACHINES FOR CUTTING SVTAVES.

Specification forming part of Letters Patient No. 46,1119, dated January 31, 1865.

JTo all 'whnm'lt may concern Y Beit known that'I, H. M. SHAW, of Fremont, in the county of Sandusky and State of Ohio, have invented a new and Improved Sta-ve-Outting Machine; and I do hereby declare that.the following is a full, clear, and exact description thereof, which will enable others skilled in the`art to make and use the saine, reference being hadto the accompanying drawings, forming part of this specification, in which p Figure 1 is-a front sectional view of my invention, taken in the line a', Fig.2; Fig. 2, a transverse vertical section of the same, taken in the line'y y, Fig. l.

Similar letters of reference indicate like parts.

Thisinvention relates to a new and irn- 4 proved-machine for cutting staves for barrels, easks, .&c .,-fro1n bolts of steamed wood and itcon sists in ano'vel construction and arrange-- 'ment ot" certain parts, as hereinafter fully shown and described, whereby the work may be done in .a neat and perfect manner, and with but a modera-te expenditure of power.

A represents a framing, which may be constructed in' anyy proper manner to support the working parts, and B is a shaft which is placed horizontally in the lower part of the framing A, and has two ily-wlieels,O O, upon it-one at each end-and a driving pulley, D, its center. 'lhe ily-wheels O O are each provided with a radial arm, a, and these Aarms are slotted nearly their whole length, as shown at b, to receive the pins E E of cranks F, the

- latter beingon the inner ends of shaftsG G,

which are fitted in the framing Ain 'line with each other, but ont vof line with the sha-ft B, as shown clearly in Fig. 1. On the crankg pins E E the lowerendsof the pinnen H H are fitted, saidpitmen projecting upward through slots c in a horizontal bed,'d, on the framing A,and connectedat theirupper endsl to a knife frame, 1'whieh works oncenters orpivots e. This knife-frame is composed of two side pieces, ff, to which the upper ends of the pitmen-H H are attached, and a crosspieee, g, to which the knife J is secured, said cross-piece having a longitudinal opening, h, made in nit, through which the stave, while being cut, passes behind the knife.- (See Fig.

v2.) The cross-piece is curved, and its endworks in contact with curved heads K, whichcorgroove h'.

.to receive the pins. E E of t respond in curvature to the barrel for which thestaves are eut.,

Between the heads K an inclined bcdpiece, L, is secured, which is provided with a groove, h', to receive the knife J when the latter approaches the lowest point of its movement. (See Fig. 2.) The lower edge of the cross-piece g of the knife-frameis provided with .two curved guides, M M. The cross-piece g is between the points e, on which the knifeframe works, andthe ends of the side pieces, f, to which the pitmen H H are attached, as shown in Fig. z, and by this arrangement a leverage-'power is obtained in operating the knife.

The bolt from which the staves are cut is placed on the bed-piece L, its front edge hein gallowed to come in contact with the guides M M, and as the knifeis dra-wn down it cuts 4a stave from the bolt, the stave passing through the opening h behindthe knife, and lthe cutting-edge of the latter passing into the age-power of the knife-actuating mechanism increases, in consequence of the crank-pins E E gradually approaching the shaft B, on which the liy-wheels O C are keyed or secured.- lhis is'an essential feature, for it will be. seen that power is increased as it is required, or as the labor of the machine increases, and the latter is therefore enabled to perform its work more uniformly and with a `less expenditure of driving-power than is required to operate other machines of this class.

It will be understood, of conrse,that the bolt is fed Vto the knife during the upward movement ofthe latter, so that the former will be in proper position to be acted upon by the knife as the latter descends.

l claim as new and desire to secure by Letters Patent- The slotted arms a of the fl -wheels C C,

the shafts G G o'f which are placed out of line with the ily-wheel shaft B, and all arranged in connection with the pitmen H H to operate the knife-frame I, substantially as and for the purpose herein set forth.

. H. M. SHAN.

Witnesses A. L. HALL,

B. STALEY.

As the knife descends, the levercranksF F, 

